Application Range
Standard Measuring Range: 0.2 to 5 ppm
Number of Strokes n: 20
Time for Measurement: approx. 30 min
Standard Deviation: ± 15 to 30 %
Color Change: pale yellow -› greyish blue
Ambient Operating Conditions
Temperature: 10 to 40°C
Absolute Humidity: 5 to 20 mg H2O / L
Reaction Principle
CH2=CH2 + Pd-Molybdate complex -> blue reaction product
Cross Sensitivity
Other similar compounds are indicated in addition to ethylene, e.g.:
100 ppm butadiene result in a reading of 1 ppm
50 ppm butylene result in a reading of 1 ppm
5 ppm propylene result in a reading of 1 ppm
20 ppm hydrogen sulfide result in a reading of 2 ppm
25 ppm CO change the indicating layer to a greyish blue.
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